US2024424330A1PendingUtilityA1
Fire extinguisher bracket holder with ejection button switch device
Est. expiryJun 26, 2043(~16.9 yrs left)· nominal 20-yr term from priority
Inventors:Xinliang Shi
A62C 13/78
49
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A fire extinguisher bracket holder with an ejection button switch device, including: a fire extinguisher bracket clamp, a fire extinguisher bracket fixing base, a fire extinguisher bracket clamp-and-fire extinguisher bracket fixing base fixing pin, a fire extinguisher bracket holder bolt, and a fire extinguisher bracket holder ejection button switch assembly, the fire extinguisher bracket fixing base being connected to the fire extinguisher bracket clamp through the fire extinguisher bracket clamp-and-fire extinguisher bracket fixing base fixing pin, the fire extinguisher bracket fixing base being connected to the fire extinguisher bracket holder ejection button switch assembly through an ejection link nut, and the fire extinguisher bracket clamp being connected to the fire extinguisher bracket holder ejection button switch assembly through the bolt. The fire extinguisher bracket holder eliminates the defect that the bolt of the conventional fire extinguisher bracket holder is easy to get loose and difficult to pull out.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A fire extinguisher bracket holder with an ejection button switch device, comprising: a fire extinguisher bracket fixing base, a fire extinguisher bracket clamp, a fire extinguisher bracket clamp-and-fire extinguisher bracket fixing base fixing pin, and a fire extinguisher bracket holder ejection button switch assembly, wherein the fire extinguisher bracket fixing base is connected to the fire extinguisher bracket clamp through the fire extinguisher bracket clamp-and-fire extinguisher bracket fixing base fixing pin, the fire extinguisher bracket fixing base is connected to the fire extinguisher bracket holder ejection button switch assembly through an ejection link nut, and the fire extinguisher bracket clamp is connected to the fire extinguisher bracket holder ejection button switch assembly through a bolt; wherein the fastening force of the fire extinguisher bracket clamp and the fire extinguisher bracket holder ejection button switch assembly is detected by an oscillatory wave detection circuit, and failure in the fastening process is diagnosed by a multi-level feature fusion model; wherein the operating mode of the oscillatory wave detection circuit is as follows: the torque, force, displacement, or direction of the fastening button are sensed by a signal acquisition sensor, sensed analog data information is converted into digital data information; the same partial discharge pulse is propagated to both ends of the bolt, with an incident wave being directly propagated to the receiving end of the fire extinguisher bracket clamp and a reflected wave first reaching the other end of the fire extinguisher bracket holder ejection button switch assembly and then being reflected back to the receiving end of the instrument; and the position of the fastening force is calculated based on the time difference between the incident wave and the reflected wave, the pulse propagation speed and the length of the bolt, completing the detection of the fastening force of the bolt.
2 . The fire extinguisher bracket holder with the ejection button switch device according to claim 1 , wherein the fire extinguisher bracket holder ejection button switch assembly comprises: an ejection link nut, a button, a bolt-type conical copper post, a spring a, a spring b, a spring c, balls, and a ball retainer, the ejection link nut being connected to the fire extinguisher bracket fixing base through threads, the button being connected to the ball retainer through the bolt-type conical copper post, the ball retainer being connected into the ejection link nut, the spring a being arranged on the surface of the bolt-type conical copper post between the ejection link nut and the button, the spring b being arranged on the surface of the ball clamp between the ejection link nut and the right step of the ball clamp, and the spring c being arranged inside the ball clamp between the balls and the bolt-type conical copper post.
3 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein an annular projection with an isosceles trapezoid-shaped cross section is adopted in the hole of the ejection link nut to retain the bolt.
4 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein an annular projection with a rectangular cross section is adopted on the right side in the hole of the ejection link nut to position the spring a and the spring b.
5 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein four arrayed round holes are adopted in the left surface of the ball retainer to position the balls.
6 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein a downward step is adopted on the right side of the arrayed round holes of the ball retainer to position the spring b.
7 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein the upper surface of the left side of the ball retainer is provided with an annular projection with a right-angled trapezoid-shaped cross section to achieve a function of preventing the balls from getting out.
8 . The fire extinguisher bracket holder with the ejection button switch device according to claim 2 , wherein the bolt-type conical copper post adopts a conical head to position the spring c.
9 . The fire extinguisher bracket holder with the ejection button switch device according to claim 8 , wherein in order for the spring c to eject out the bolt, the following formula shall be met:
E
f
=
E
p
(
1
)
in formula (1), E represents energy, f represents friction, p represents elastic force, E f represents energy consumed by the friction between the bolt and the ball retainer, and E p represents elastic potential energy generated by the compression of the spring c;
E
f
=
fmgx
1
(
2
)
in formula (2), E f represents energy consumed by the friction between the bolt and the ball retainer, f represents a friction coefficient between the bolt and the ball retainer, m represents the mass of the bolt, g represents gravitational acceleration, and x 1 represents the distance by which the bolt has been ejected out; and
E
p
=
1
2
kx
2
2
(
3
)
in formula (3), E p represents the elastic potential energy generated by the compression of the spring c, k represents the stiffness of the spring c, and x 2 represents the distance by which the spring c has been compressed.
10 . The fire extinguisher bracket holder with the ejection button switch device according to claim 1 , wherein a multi-scale feature function output by the multi-level feature fusion algorithm model is:
{
F
1
=
block
1
(
D
)
F
2
=
block
2
(
F
1
)
F
3
=
block
3
(
F
2
)
F
4
=
block
4
(
F
3
)
(
4
)
in formula (4), block1, block2, block3 and block4 are four ordered convolutional blocks of a backbone network, which are combined in order to form a whole feature extractor; F represents a multi-level fire extinguisher bracket clamp image feature map, and F 1 , F 2 , F 3 and F 4 represent multi-level feature maps of four different scales selected, respectively; D represents a global eigenvector of input bolt image data;
wherein in the operating process of the multi-level feature fusion algorithm model, the bolt image feature fusion process is as follows:
denoising in spatial directions: the noise of the fire extinguisher bracket clamp image feature map is reduced from spatial positions; for each multi-level feature map F, a spatial weight matrix W S is calculated by the following formula:
W
S
(
i
,
j
)
=
f
S
2
[
f
S
1
(
F
(
i
,
j
)
)
]
i
∈
H
,
j
∈
W
(
5
)
in formula (5), ƒ S is a combination of a fully connected layer and a nonlinear activation function, Sigmoid, wherein ƒ S1 reduces the dimensionality of F from C to C/16 and a function ƒ S2 of correcting ReLU then reduces C/16 to 1, followed by the function of the Sigmoid function (S), S1 and S2 which are two FC layers with nonlinear activation function can understand the significance of eigenvectors at the (i,j) position, and the feature maps are weighted by a weighting matrix obtained by training:
F
′
(
i
,
j
,
k
)
=
W
S
(
i
,
j
)
*
F
(
i
,
j
,
k
)
k
∈
C
(
6
)
in formula (6), all the fire extinguisher bracket clamp image data elements of F′ are weighted according to the importance degree at the (i,j) position to achieve denoising in spatial directions;
denoising in channel directions: the fire extinguisher bracket clamp image data feature maps are further denoised along feature channels; and the denoising function W C is:
W
C
(
k
)
=
1
H
×
W
∑
i
=
0
H
∑
j
=
0
W
F
C
(
i
,
j
)
(
7
)
the transformed weighting matrix is expressed by W′ C , and the relationship between W′ C and W C is expressed as:
W
C
′
=
f
C
2
[
f
C
1
(
W
C
)
]
(
8
)
the fire extinguisher bracket clamp image data feature map F″ is weighted again through dot product operation along the channels to achieve the objective of denoising in the channel directions, and the dot product operation is as follows:
F
″
(
i
,
j
,
k
)
=
W
C
′
(
k
)
*
F
(
i
,
j
,
k
)
(
9
)
multi-level feature fusion is then performed; after (4) to (9), a denoised fire extinguisher bracket clamp image feature map of F is obtained, F is integrated into a global eigenvector D, and the elements in the kth channel of D are calculated as follows:
D
(
k
)
=
1
H
×
W
∑
i
=
0
H
∑
j
=
0
W
F
″
(
i
,
j
)
(
10
)
the global eigenvectors D 1 , D 2 , D 3 and D 4 corresponding to F 1 , F 2 and F 3 represent the fire extinguisher bracket clamp image features under different measurement conditions, and the feature fusion output is:
D
0
=
(
D
1
,
D
2
,
D
3
,
D
4
)
(
11
)
D 0 is obtained by connecting D 1 , D 2 , D 3 and D 4 in series.Join the waitlist — get patent alerts
Track US2024424330A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.